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Earth, Planets and Space
Fig. 3 | Earth, Planets and Space

Fig. 3

From: Medium-energy particle experiments—electron analyzer (MEP-e) for the exploration of energization and radiation in geospace (ERG) mission

Fig. 3

Sensor position and operation sequence of the MEP-e. a and b Mounting position of the MEP-e onboard the ERG. The definition of the azimuthal channels is also indicated in (a). The odd offset (39.4° from the spin axis for channels 0 and 8) is the result of the careful design of the sensor field of view. It is designed so that a gap between two adjacent detectors (e.g., channels 2 and 3) are filled by another detector (channel 1) after a half spin of the spacecraft. c Observation sequence of the MEP-e

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